12.106.2(f) . station; 

12.106.2(e) . longitudinal C of G range and associated limits; 

12.106.2(d) . centre of gravity (C of G); 

12.106.2(c) . moment (including units used); 

Moment of a force depends on 2 things

– The magnitude of the force and
– the moment arm which is the distance between the point at which the force is being applied and the pivot point or fulcrum’

12.106.2(b) . datum; 

This is a point which is specified by aircraft manufacturers in the weight and balance data supplied.
Some choose the nose of the aircraft as the datum

12.106.2(a) . arm (moment arm); 

The moment arm is the distance between the point at which the force is applied aqnd the pivot point / fulcrum

12.106.2. Define the following terms:

12.104. Landing Performance

12.104.4. Explain the difference between landing distance required (LDR) and landingdistance available (LDA). Weight and Balance 

This is the distance from a point 50 feet over the threshold at the correct approach speed with the flaps set to the correct position and power off – to the point where the aircraft reaches a full stop using maximum braking

12.104.2. Given typical performance data, demonstrate the ability to determine LDR.

Using the chart determine the landing distance required for the aircraft and conditions
Enter with the aerodrome elevation – no need to work out pressure altitude
Intercept the weight line
Pass through the surface block to the slope and wind component blocks to come up with a landing distance